Insert few Rows in Employee Table. I got less time to insert many rows so I inserted 3 rows as shown below.EmployeeName JobGrade NetSalary-------------- ------------ ------------John A 5000.0000MikeMiles A 5600.0000Armados B 3000.0000

If any one asked you to write a query to find salary based on selected employee, I know you can write within seconds. However to perform similar query in BizTalk you could use sophisticated method. I will guide you how to write same query in BizTalk mapping.

Let say I want to find the Employee John Salary, looking at above table structure I can easily say that its 5000/-. Lets find John same salary via BizTalk mapper.

Create Schemas1. Add one Field under “InputEmp” Schema as empName - This should be used asWhere clause value in SQL Query.

2. Add 3 Fields under DBOutputs Schema one should filed should be dedicated for databaseerror descriptions. Here I designed 2 Record Nodes and 2 fields (employeenameand Salary) for EmpData Record node and one field for Status records which holdsthe database error descriptions.

You can find my Schema structure as mentioned below.

RootEmpDataEmployeeNameSalaryStatusErroDesc

Creating MapHope you remember that we need to accomplish the Select Query via biztalk mapper.

Database Lookup: This functoid used to extract information from a database and store it as a Microsoft ActiveX Data Objects (ADO) recordset. This functoid requires four input parameters in the order of lookup value, database connection string, table name and column name for the lookup value.

Value Extractor: extract the appropriate column value from a recordset returned by the Database Lookup functoid. This functoid requires two input parameters like a link to the Database Lookup functoid and a column name.

Error Return : capture information about errors, such as database connection failures, that occur during run time. This functoid requires one input parameter like a link from the Database Lookup functoid to any Error description field

In below image you can identify each functoid.

Now lets start add inputs for Database Lookup functoid as we learned in above description.You can find 4 inputs added for DatabaseLookup functodshown in right side image.

First parameter mapped from “InputEmp” schemafield name called empName

Second parameter clearly says that itsConnection string for your database.

Third parameter employee is the TableName what we defined in beginning.

now lets try to test the map. Select the mapEmp.btm form your Solution and Right click and select “Test Map” you can find the generated file in your output window. When you open the file you will see the result as shown below.

Looks perfect… what about the error Description? Is it working??let try this.. I am trying to make my database to be offline ( Right click your database à Tasksà Take Offline )

When I do Test Map I could see the below result..

However this method can apply for your map only when you know that database is not going to change for your various environments like UAT and production.

If you database name is different for each environment I suggest you to go for Business Rules rather than Db Look up fuctoids.